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Asus P5N32-E Raid problem

post #1 of 4
Thread Starter 
My issue with the Asus P5N32-E 680i Raid controller .

First off with a standard 74GB ADFD Raptor in raid 0 (2 drives) you will obtain a read rate of around 125MB\\s and a burst of 240MB\\s
(these benches were taken of an operating OS. Not storage)
1st pic

With read and write caching turned off (HD Tach only does a read test so I will assume that the write would be around the same value)
Read rate 144MB\\s Burst rate 253MB\\s
2nd pic

This is where you would expect the benches to be….

Now my question is what effect does cache have on the Southbridge?
How is it affecting the Read/Write rate?
&
What are the affects of turning off Read\\Write cache on the OS\\stability\\data loss?
& Most of all
How can we work around this problem? Bios update\\ Different drives\\ System tweak?

I am hoping that someone with a very good understanding of HD read\\write cache and Southbridge Raid controllers can inform all of us who own a P5N32-E 680i board, what is going on?

After there is a satisfactory conclusion\\ workaround I would like to compile a data sheet\\ reference guide that could be added to Robilar’s P5N32-E guide. (with his permission of cause) For future reference.
LL
LL
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
E6850 @ 3.93GHz P5N32-E SLi 8800GTS 640MB SLi 702/1080 OCZ2N1066SRG1 
Hard DriveOptical DriveMonitorPower
74GB Raptor16MB RAID 0 Panasonic 212D DVD Diamond Pro 2070sb CRT 21" Silverstone 850W Strider 
Case
Antec 900 
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My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
E6850 @ 3.93GHz P5N32-E SLi 8800GTS 640MB SLi 702/1080 OCZ2N1066SRG1 
Hard DriveOptical DriveMonitorPower
74GB Raptor16MB RAID 0 Panasonic 212D DVD Diamond Pro 2070sb CRT 21" Silverstone 850W Strider 
Case
Antec 900 
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post #2 of 4
I did some testings too.And the only difference is when,disable the read and write.My read went down and the burst when up.1st pics is the original raid 0.And the 2nd is with read disable in windows manager.
LL
LL
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
E6850 SLA,G0,@3.7 P5N32 SLi/680iSB=Jing ting/nb=spirit II[1203]bios] MSI 470 GTX[order on his way] 4 gig ocz Reapers pc 8500 
Hard DriveOSMonitorKeyboard
2 WD 250gig 16mb/raid 0\1 WD640 AALS 32MB win xp pro sp3/Windows 7 Beta LCD,22"=Samsung 2MS,226BW,52"samsung LN5A550 Thermaltake xaser 
PowerCaseMouseMouse Pad
oczgamexstream700 wtt x blade/modded Razor deathadder thermaltake gamer pad/led 
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My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
E6850 SLA,G0,@3.7 P5N32 SLi/680iSB=Jing ting/nb=spirit II[1203]bios] MSI 470 GTX[order on his way] 4 gig ocz Reapers pc 8500 
Hard DriveOSMonitorKeyboard
2 WD 250gig 16mb/raid 0\1 WD640 AALS 32MB win xp pro sp3/Windows 7 Beta LCD,22"=Samsung 2MS,226BW,52"samsung LN5A550 Thermaltake xaser 
PowerCaseMouseMouse Pad
oczgamexstream700 wtt x blade/modded Razor deathadder thermaltake gamer pad/led 
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post #3 of 4
Thread Starter 
Hi Alexisd,

It looks to me that you have reached the limit of your drives before the 120-125MB\\s wall
If you look closely to the first hd tach pic you can clearly see that it is a striate line through the 120MB\\s range. Something with this southbridge is slowing the average transfer rates down.
If you have another drive or two to add to the raid you will see a dramatic drop in performance.
With this MB it looks to be a waste of money having two raptors in raid 0, should have just go two 300GB 16Mb sata II.
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
E6850 @ 3.93GHz P5N32-E SLi 8800GTS 640MB SLi 702/1080 OCZ2N1066SRG1 
Hard DriveOptical DriveMonitorPower
74GB Raptor16MB RAID 0 Panasonic 212D DVD Diamond Pro 2070sb CRT 21" Silverstone 850W Strider 
Case
Antec 900 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
E6850 @ 3.93GHz P5N32-E SLi 8800GTS 640MB SLi 702/1080 OCZ2N1066SRG1 
Hard DriveOptical DriveMonitorPower
74GB Raptor16MB RAID 0 Panasonic 212D DVD Diamond Pro 2070sb CRT 21" Silverstone 850W Strider 
Case
Antec 900 
  hide details  
Reply
post #4 of 4
Thread Starter 
bump
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
E6850 @ 3.93GHz P5N32-E SLi 8800GTS 640MB SLi 702/1080 OCZ2N1066SRG1 
Hard DriveOptical DriveMonitorPower
74GB Raptor16MB RAID 0 Panasonic 212D DVD Diamond Pro 2070sb CRT 21" Silverstone 850W Strider 
Case
Antec 900 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
E6850 @ 3.93GHz P5N32-E SLi 8800GTS 640MB SLi 702/1080 OCZ2N1066SRG1 
Hard DriveOptical DriveMonitorPower
74GB Raptor16MB RAID 0 Panasonic 212D DVD Diamond Pro 2070sb CRT 21" Silverstone 850W Strider 
Case
Antec 900 
  hide details  
Reply
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